Abstract:
:Heat-stable L-lactate dehydrogenase [EC 1.1.1.27] was purified from an extremely thermophilic bacterium belonging to the genus Thermus, and it showed an allosteric nature dependent on fructose 1,6-bisphosphate as an effector. The enzyme had a molecular weight of approximately 120,000 with a subunit molecular weight of 31,000. For pyruvate reduction, the optimal pH was found to be 4.5. At neutral pH, which is a more physiological region, little enzyme activity was observed, but marked reaction resulted from the addition of fructose 1,6-bisphosphate. This addition stabilized the enzyme toward heat treatment at up to 95 degrees C. The optimal temperature for the enzyme reaction was approximately 80 degrees C for pyruvate reduction and 95 degrees C for lactate oxidation.
journal_name
J Biochemjournal_title
Journal of biochemistryauthors
Taguchi H,Yamashita M,Matsuzawa H,Ohta Tdoi
10.1093/oxfordjournals.jbchem.a133821subject
Has Abstractpub_date
1982-04-01 00:00:00pages
1343-8issue
4eissn
0021-924Xissn
1756-2651journal_volume
91pub_type
杂志文章abstract::1. When ribonuclease T1 [EC 3.1.4.8] (0.125% solution) was treated with a 760-fold molar excess of iodoacetamide at pH 8.0 and 37 degrees, about 90% of the original activity was lost in 24 hr. The half-life of the activity was about 8 hr. The binding ability for 3'-GMP was lost simultaneously. Changes were detected on...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a131398
更新日期:1976-12-01 00:00:00
abstract::Nitric oxide (NO) has diverse effects on immune responses and hepatic functions. In BNL CL.2 cells, the murine embryonic liver cells, inducible nitric oxide synthase (iNOS) mRNA expression appeared after 3 h of treatment with IFN-gamma and LPS. Interestingly, mRNA and protein expression of iNOS was down-regulated by s...
journal_title:Journal of biochemistry
pub_type: 杂志文章
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更新日期:2001-01-01 00:00:00
abstract::Two cDNA clones, pHPah1 and pHPah2, encoding polycyclic hydrocarbon-inducible forms of rabbit liver microsomal cytochrome P-450 were isolated and their nucleotide sequences were determined. The inserts of pHPah1 and pHPah2 contained open reading frames specifying the entire primary structures of cytochrome P-450s, con...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a122017
更新日期:1987-06-01 00:00:00
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journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a135173
更新日期:1985-04-01 00:00:00
abstract::Serine dehydrogenase from Escherichia coli is a homotetrameric enzyme belonging to the short-chain dehydrogenase/reductase (SDR) family. This enzyme catalyses the NADP(+)-dependent oxidation of serine to 2-aminomalonate semialdehyde. The enzyme shows a stereospecificity for β-(3S)-hydroxy acid as a substrate; however,...
journal_title:Journal of biochemistry
pub_type: 杂志文章
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更新日期:2011-06-01 00:00:00
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journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a134920
更新日期:1984-10-01 00:00:00
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journal_title:Journal of biochemistry
pub_type: 杂志文章,评审
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更新日期:1995-11-01 00:00:00
abstract::It has been demonstrated that the GM2 ganglioside cannot be cleaved by exo-beta-N-acetylhexosaminidases isolated from molds or bacterial sources. Here, a novel GM2 ganglioside-degrading enzyme was found in cells of Nocardia sp. This enzyme releases free fatty acids from the GM2 ganglioside. The chemical structure of t...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a122212
更新日期:1988-01-01 00:00:00
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journal_title:Journal of biochemistry
pub_type: 杂志文章
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更新日期:2011-04-01 00:00:00
abstract::Aplyronine A is a macrolide isolated from Aplysia kurodai. By monitoring fluorescent intensity of pyrenyl-actin, it was found that aplyronine A inhibited both the velocity and the degree of actin polymerization. Aplyronine A also quickly depolymerized F-actin. The kinetics of depolymerization suggest that aplyronine A...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a021449
更新日期:1996-09-01 00:00:00
abstract::The gene encoding a MutM from Desulfovibrio vulgaris (Miyazaki F) was cloned and expressed in Escherichia coli. A 5.9-kb DNA fragment, isolated from D. vulgaris (Miyazaki F) by XhoI and PvuII, contained a MutM gene and other open reading frames. The nucleotide sequence of the MutM gene indicated that the protein was c...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvp005
更新日期:2009-04-01 00:00:00
abstract::A stroma-dependent B lymphoid cell line (B31-1) has been established by coculturing sorted stem cells on a novel bone marrow stromal cell line (TBR31-1). B31-1 cells express B220, but do not express other B lymphoid differentiation markers including CD43, heat stable antigen (HSA), or surface immunoglobulin (Ig) M (sI...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a022326
更新日期:1999-03-01 00:00:00
abstract::In order to identify the b-type cytochrome involved in the nitrate reduction in a photodenitrifier, Rhodopseudomonas sphaeroides forma sp. denitrificans, the b-type cytochromes in the spheroplast membranes were characterized. Difference spectra at 77K of spheroplast membranes indicated the presence of two b-type cytoc...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a134765
更新日期:1984-06-01 00:00:00
abstract::L-selectin is a cell adhesion molecule mediating the initial capture and subsequent rolling of leukocytes along the endothelial cells expressing L-selectin ligands. In addition to its action in adhesion, an intracellular signaling role for L-selectin has been recognized. Its cytoplasmic domain is involved in signal tr...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvj149
更新日期:2006-08-01 00:00:00
abstract::The presence of NADH-cytochrome b5 reductase [EC 1.6.2.2] in microsomes from anaerobically grown yeast was confirmed by its isolation and purification. The purified preparation of the reductase showed an apparent molecular weight of 27,000 daltons. The reductase appeared to contain loosely-bound FAD as a prosthetic gr...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a131434
更新日期:1977-01-01 00:00:00
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journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvy069
更新日期:2018-12-01 00:00:00
abstract::Cation specificity and effects of pH and temperature on membrane aggregation of porcine intestinal brush borders were studied in terms of the turbidity change of the membrane suspensions due to the addition of polyvalent cations. Monovalent cations (K+ and Na+) did not induce the membrane aggregation at 5 mM or below....
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a134681
更新日期:1984-03-01 00:00:00
abstract::The heparin-induced self-aggregation behaviours of four repeat peptides (R1-R4) in an acidic solution (pH = 4.5) were investigated by fluorescence and circular dichroism (CD) measurements and compared with those in a neutral solution (pH = 7.5). In contrast with the self-aggregation-resistive behaviours of the R1 and ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvm099
更新日期:2007-07-01 00:00:00
abstract::Aldehyde reductases from several mammalian and avian tissues transferred the pro-4R hydrogen of NADPH to the substrate, whereas the stereospecificity of carbonyl reductases was not uniform being correlated with the ability to catalyze the oxidoreduction of hydroxysteroids. ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a135362
更新日期:1985-10-01 00:00:00
abstract::We tested the capsid targeted viral inactivation method as an anti-HBV strategy. HepG2 cells were cotransfected with HBV expression plasmid and the plasmid encoding fusion protein of either Core-A3C or Core-humanized renilla GFP (hrGFP). Core-A3C had substantial effect on HBV DNA levels. In the HepG2 cells expressing ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvr086
更新日期:2011-10-01 00:00:00
abstract::S-RNase is associated with the gametophytic self-incompatibility of flowering plants in Solanaceae and, on the basis of sequence homology, belongs to the RNase T2 family. To identify the active site residues in S-RNase, Nicotiana alata S6-RNase was studied by chemical modification. S6-RNase was inactivated with iodoac...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/118.5.1007
更新日期:1995-11-01 00:00:00
abstract::An esterase that specifically hydrolyzes medium-chain (C(3)-C(5)) monoalkyl phthalates was purified from phthalate-grown Micrococcus sp. YGJ1. The enzyme activity was split into two fractions by hydrophobic chromatography on Phenyl Sepharose, and the enzymes were purified to homogeneity from each fraction. The purifie...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvi004
更新日期:2005-01-01 00:00:00
abstract::The activity of thermolysin is greatly enhanced in the presence of high concentrations of neutral salts [Holmquist, B. and Vallee, B.L. (1976) Biochemistry 15, 101-107; Inouye, K. (1992) J. Biochem. 112, 335-340]. NaBr and NaCl are the most effective for the activation. An absorption difference spectrum with a peak ar...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a124557
更新日期:1994-09-01 00:00:00
abstract::We isolated three genomic clones of rat P-450(11 beta) genes (CYP11B). Two of them corresponded to 11 beta-hydroxylase gene (CYP11B1) and aldosterone synthase gene (CYP11B2), respectively. The third one was a novel gene resembling both CYP11B1 and CYP11B2, and was named CYP11B3 gene (CYP11B3). CYP11B2 and CYP11B3 are ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a124018
更新日期:1993-02-01 00:00:00
abstract::In order to establish cell lines which complement the growth of temperature-sensitive (ts) mutants of influenza virus, three RNA polymerase and nucleoprotein (NP) genes each linked to the mouse mammary tumor virus LTR were cloned into the bovine papillomavirus vector DNA. After co-transfection of mouse C127 cells with...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a123592
更新日期:1991-09-01 00:00:00
abstract::Oxygen-binding to haemocyanin (Hc) is generally an exothermic process, with overall enthalphy of oxygenation varying from species to species. A number of crustacean Hcs showed a null or reduced enthalphy of oxygenation, among others, the anomuran Pagurus bernhardus and Paralithodes camtscaticae possess a completely te...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvm210
更新日期:2008-02-01 00:00:00
abstract::A new protein with a chain weight of approximately 220,000 was isolated from 0.6 M KI extracts of I-Z-I brushes of rabbit and chicken skeletal muscles, using (NH4)2SO4 precipitation and three column chromatographic procedures in succession. It was only possible to separate the high molecular weight protein from actin ...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a133401
更新日期:1981-06-01 00:00:00
abstract::The nucleotide sequence of gene PBII encoding salivary proline-rich protein P-B was determined. PBII is 7.1 kb long and contains 3 exons. PBII exhibits considerable nucleotide sequence homology not only in exons but also in introns with PBI (accession number D89501), the gene whose nucleotide sequence was determined p...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a022620
更新日期:2000-03-01 00:00:00
abstract::The interactions of benzeneboronic acid (BBA) as a transition state analog with subtilisin (EC 3.4.21.4) and with alpha-chymotrypsin (EC 3.4.21.1) were investigated kinetically by the temperature-jump method using pH indicators. For both enzymes, the concentration dependence of the relaxation time was consistent with...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.jbchem.a130799
更新日期:1975-04-01 00:00:00
abstract::We have isolated a gene (clone Y113G7A.11) from Caenorhabditis elegans (C. elegans), that we have designated as ceST1, and which is the only member of the cytosolic sulfotransferase (SULT) gene family present in the genome of this organism. We identified the SULT motifs of ceST1 based upon their deduced amino acid seq...
journal_title:Journal of biochemistry
pub_type: 杂志文章
doi:10.1093/jb/mvj041
更新日期:2006-03-01 00:00:00